Pretty much, guitars and the effects boxes/plugins are the only thing that can sound like a guitar.
A guitar is the ultimate guitar synthesiser, whilst it probably can be synthesised to a high standard, it'd just be easier and faster to learn guitar unless you're REALLY REALLY good at messing around with synth/samplers.
What you want is to get one of your guitarist mates to record every note on guitar, clean leaves you more room to play but the fx might well give you what you want. have fun!